Fixed an issue with run_command() sometimes locking up #16
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Upon further research it would lock up when there was output to
stderr
and theread()
function was used. There were additional issues when stdout didn't have a newline character, the output didn't work properly. This was most noticeable when sudo apt-get upgrade was occasionally run. This adds a non-blocking read function and fixes some other issues.Tested successfully with https://github.com/adafruit/Raspberry-Pi-Installer-Scripts/blob/main/raspi-blinka.py where it was most apparent.
@ladyada